[FFmpeg-trac] #1616(undetermined:new): bad seek in WMV2 file

[FFmpeg]

#1616: bad seek in WMV2 file
-------------------------------------+-------------------------------------
             Reporter:  DonMoir      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Sample file:

 http://sms.pangolin.com/temp/bad_seek_wmv2.wmv (3 mb)

 If you do ffplay -ss 7 bad_seek_wmv2.wmv it works correctly.

 But ffplay -ss 8 bad_seek_wmv2.wmv will fail with gray frame.

 For my app, I see corruption and not gray.

 VLC has a bit of a problem with it but not as bad.

 WMP gets it perfect.

 With the following you will get a gray frame and a warning about first
 frame is not keyframe. The first frame is a keyframe but maybe not the one
 it seeked to.

 ffplay -ss 8 CreaToon3.wmv
 ffplay version N-43206-gf857465 Copyright (c) 2003-2012 the FFmpeg
 developers
   built on Aug  4 2012 16:12:33 with gcc 4.7.1 (GCC)
   configuration: --disable-static --enable-shared --enable-gpl --enable-
 version3
  --disable-w32threads --enable-runtime-cpudetect --enable-avisynth
 --enable-bzlib
  --enable-frei0r --enable-libass --enable-libcelt --enable-libopencore-
 amrnb
  --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-
 libmp3lame
  --enable-libnut --enable-libopenjpeg --enable-librtmp --enable-
 libschroedinger
  --enable-libspeex --enable-libtheora --enable-libutvideo --enable-libvo-
 aacenc
  --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-
 libx264
  --enable-libxavs --enable-libxvid --enable-zlib
   libavutil      51. 66.100 / 51. 66.100
   libavcodec     54. 49.100 / 54. 49.100
   libavformat    54. 22.100 / 54. 22.100
   libavdevice    54.  2.100 / 54.  2.100
   libavfilter     3.  5.102 /  3.  5.102
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, asf, from 'CreaToon3.wmv':
   Metadata:
     title           : CreaToon 3
     artist          : ANIMANTE BALEARES S.L.
     copyright       : ANIMANTE BALEARES S.L. 2004
     WMFSDKVersion   : 9.00.00.2980
     WMFSDKNeeded    : 0.0.0.0000
     IsVBR           : 0
   Duration: 00:00:42.23, start: 0.000000, bitrate: 664 kb/s
     Stream #0:0(spa): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, 1
 channels,
 s16, 20 kb/s
     Stream #0:1(spa): Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 640x480,
 671 kb/
 s, 25 tbr, 1k tbn, 1k tbc
 [asf @ 012a04a0] ignoring invalid packet_obj_size (15 116 116 310)
 [asf @ 012a04a0] freeing incomplete packet size 310, new 1580
 1344327525.2[wmv2 @ 012a7060] 2 warning: '''first frame is no keyframe'''
 Frame changed from size:0x0 to size:640x480q=    0B f=0/0
   29.51 A-V:  0.186 fd= 163 aq=    5KB vq=   83KB sq=    0B f=0/0

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1616>
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